Printer&#39;s quoin.



N. GRASSO.

PRINTBR'S QUOIN.

APPLICATION FILED my e, 1908.

920,322, Patented May 4, 1909.

AZ w z .l mu cm, wnnmuron, n. 4'.

UNITED STATES NICHOLAS GRASSO, OF NEW YORK, N. Y.

PRINTERS QUOIN Patented May 4, 1909.

Serial No. 431,167.

To all whom it may concern:

Be it known that I, Nrorrorxs Gnasso, citizen of the United States,residing at New York, in the county of New York and State of New York,have invented certain new and useful Improvements in Printers Quoins, ofwhich the following is a specification.

The object of this invention is a simple and efficient construction ofprinters quoin, for use in looking up forms in chases, the parts beingso arranged that the quoin will be securely held in adjusted positionand prevented from slipping or jumping out, and the invention consistsin certain constructions and arrangements of the parts that I shallhereinafter fully describe and claim.

For a full understanding of the invention, reference is to be had to thefollowing description and accompanying drawings, in which:

Figure 1 is a perspective View of printers quoins embodying myinvention. Fig. 2 is a top plan view thereof, partly in section. Fig. 3is an inner edge View of one of the quoin members. Fig. 4 is atransverse sectional view through the head of a quoin member. Fig. 5 isa horizontal sectional view through the head.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the drawings by the samereference characters.

Referring to the drawing, the numeral 1 designates a quoin memberconstructed in accordance with my invention, said quoin member beingformed with a longitudinally extending rib 2 provided with bevel teeth3, as shown. The quoin member is also formed on opposite sides of therib 2 with the usual notches 4 to receive a key (not shown) for use inlooking up the quoin in the chase. The quoin member 1 is formed at oneend with a head 5, and said head is provided, in registry with one endof the rib 2, with a transversely extending chamber 6 and with angularside opening slots 7, the laterally extending portions of which are inregistry with the chamber 6, the longitudinally extending portions ofthe respective slots extending in opposite directions, as clearlyillustrated in the drawing. A dog 8 with its end beveled correspondingto the teeth 3 fits snugly in the chamber and is mounted for movementtherein, said dog being formed in its inner end with a socket in which aspring 9 fits, the tension of the spring being exerted on the dog tohold it projected from the chamber 6 so as to ride along the teeth 3 ofan opposing quoin member when two quoin members are placed together andslid one upon the other longitudinally in the customary manner. Latcharms 10 extend outwardly in opposite directionsfrom the dog 8, said armsin the present instance comprising a pin which extends through the dog.'lhe ends of the latch arms 10 are received in the respective slots 7and project out from said slots as shown. The head 5 is of less widththan the body portion of the quoin member and is formed at its outer endwith outstanding ribs 11, said ribs extending the full depth of the headand projecting laterally beyond the extremities of the cross arms, theends of said cross arms thereby terminating within the plane of saidribs, so that said arms will not be liable to be struck and cause theaccidental unlocking of the quoins when the latter have been locked upin the chase.

In the practical use of a pair of quoin membcrs constructed inaccordance with my invention, as the key is ap Jlied to slide one quoinmember longitudinr ly relative to the other, it is manifest that thedogs of the respective quoin members will engage with the teeth 3 of theopposing quoin member and thereby securely lock the quoin members inadjusted position so as to securely prevent them from slipping orjumping out of the chase. In order to interlock the quoin members, it isonly necessary to push one of the latch arms 10 backwardly, and thismotion will effect the retraction of the dog 8 in the chamber 6 andprevent it from catching in the teeth, the said arms being secured inthe longitudinally extended portions of the angular notches 4 so as tosecurely hold the dog in retracted position.

Having thus described the invention, what is claimed as new is:

The herein described printers quoin member provided with alongitudinally extending toothed rib, and at one end of said rib with ahead, the head being formed with a chamber and with angular side openingslots communicating with said chamber, the longitudinal portions of saidslots extending in opposite directions, a spring pressed dog fittingsnugly in said chamber and mounted for movement therein, the dog beingformed in 5 yond the extremities of the cross arms, as its inner endwith a socket, a coil spring and for the purpose set forth. 10 mountedin said socket and bearing against In testimony whereof I aHiX mysignature the bottom of the chamber, and cross arms in presence of twowitnesses.

secured to said dog and working in said slots, NICHOLAS GRASSO. [L. s]

the head being formed at its outer end and Witnesses: on both sides withribs extending the full JOHN STUPELLE, depth of the head and projectinglaterally be- CHAR-LES DELVEA.

